Hi,
On 3 October 2012 19:23, Ryan Newton rrnew...@gmail.com wrote:
That said, I don't see a reason for not including a separate version of
runParIO :: ParIO a - IO a for non-deterministic computations. It seems
really useful!
Exactly. I should have been more explicit but that's what I
Several of the monad-par schedulers COULD provide a MonadIO instance and
thus liftIO, which would make them easy to use for this kind of parallel
IO business:
http://hackage.haskell.org/packages/archive/monad-par/0.3/doc/html/Control-Monad-Par-Scheds-Direct.html
And that would be a little more
I'm not sure that exposing a liftIO for Monad.Par is the best idea. Since
all these parallel computations use runPar :: Par a - a, it advertises
that the result is deterministic. I'm not really comfortable with a hidden
unsafePerformIO hiding in the background.
That said, I don't see a reason for
That said, I don't see a reason for not including a separate version of
runParIO :: ParIO a - IO a for non-deterministic computations. It seems
really useful!
Exactly. I should have been more explicit but that's what I meant about
adding another module. You would import
I'm new to concurrent programming in Haskell. I'm looking for a
drop-in replacement for 'mapM' to parallelize a set of independent IO
operations. I hoped 'mapConcurrently' might be it, but I need
something that will only spawn as many threads as I have CPUs
available [1].
I also tried
Check out the parallel combinators in parallel-io:
http://hackage.haskell.org/packages/archive/parallel-io/0.3.2/doc/html/Control-Concurrent-ParallelIO-Global.html
On Fri, Sep 28, 2012 at 1:01 PM, Greg Fitzgerald gari...@gmail.com wrote:
I'm new to concurrent programming in Haskell. I'm
On 28/09/12 19:58, Patrick Mylund Nielsen wrote:
Check out the parallel combinators in parallel-io:
http://hackage.haskell.org/packages/archive/parallel-io/0.3.2/doc/html/Control-Concurrent-ParallelIO-Global.html
also
Check out the parallel combinators in parallel-io:
Cool, that's the library I'm looking for! I see it uses
'numCapabilities' to get the command-line value for '-N' and not
'getNumCapabilities' to query the system for how many cores are
available. So using the 'Local' module, this works:
On Fri, Sep 28, 2012 at 11:01 AM, Greg Fitzgerald gari...@gmail.com wrote:
I also tried Control.Parallel.Strategies [2]. While that route works,
I had to use unsafePerformIO. Considering that IO is for sequencing
effects and my IO operation doesn't cause any side-effects (besides
hogging a
